SNS 用クロップ
Instagram / Threads / Bluesky / Facebook / X / TikTok / LinkedIn のアスペクト比プリセットで一気にクロップでき、5 秒で揃います。
AK
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PNG, JPG, or any image format, or paste
Social Cropper resizes the crop window to the aspect ratio of a chosen platform preset and lets you drag the window over the image to pick the exact frame. The output is a PNG at the original pixel density, cropped on a canvas locally.
Drop, click, or paste an image into the dropzone. Supported types include PNG, JPG, and any image format the browser can decode.
The bright outlined rectangle shows the crop. Drag with mouse or touch to slide it inside the image. A nine-cell rule-of-thirds grid is layered over the crop to help compose the framing.
The bottom panel reports original size, crop size, and the current top-left position in pixels. Press the Crop button to render the output, then Download saves a PNG named with the platform and ratio.
Instagram, Bluesky, and Threads each have their own preset bundle including square, portrait, landscape, stories, and wide ratios. Picking a platform shows only the ratios actually used by that network.
The largest rectangle of the chosen aspect ratio that fits inside the image is used. Drag the highlighted box on the preview to choose where in the image that crop is taken.
Yes. Cropping happens on a canvas at the source pixel size, so no scaling is applied. The output PNG keeps every pixel inside the crop window.
No. The file is read into a hidden canvas in your browser; the cropped PNG is generated locally and offered as a direct download.